President Barack Obama’s job approval ratings remain mired in the 40s, while Hillary Clinton handily leads all likely 2016 Republican challengers in a new Quinnipiac University poll of Florida voters released Thursday.

In the poll, Clinton led by 7 to 21 percentage points when matched against potential Republican opponents, including Florida Sen. Marco Rubio and former Florida Gov. Jeb Bush for the 2016 presidential race, with Bush coming closest.

Clinton led:

• Bush, 49 percent to 42 percent.

• New Jersey Gov. Chris Christie, 54 percent to 33 percent.

Asked their favorite for the 2016 nominee, Florida Republican voters gave Bush a narrow lead in a widely divided field. Bush led with 21 percent, with 18 percent for Rubio, 10 percent for Texas Sen. Ted Cruz, 8 percent for Paul, 7 percent for former Arkansas Gov. Mike Huckabee and 6 percent for Christie.

Asked their opinions of Obama’s performance as president, 52 percent disapproved to 44 percent approving. Since June 2013, Obama has varied from 47 to 40 percent approval among Florida voters.

Clinton faces little challenge in Florida as the favorite pick by Democrats for their 2016 nominee. She received 67 percent followed by 8 percent each for Vice President Joe Biden and Massachusetts Sen. Elizabeth Warren.

The July 17-21 poll surveyed 1,251 registered voters in Florida, with an error margin of 2.8 percentage points, or 4.6 points for questions including only Republicans or Democrats.